There is no simple instruction how to do it. I mean, we can’t just write you here several steps in order to achieve this change. It is related with additional coding and testing. We consider this as modification of the original code and it has to be done as a customization task. If you want this to be done by us, just contact us via the contact form in our profile page and explain this change. Our team member will reply to you with the estimation: time and cost.

We had such plans but setting up a backend seems to be a problem for most of the users. We verified this with another app, where we invested a lot of efforts in order to develop administration backend together with the app.

Have you registered Apple Developer account? When you do this, you will need the proper provisioning profiles in order to sign and run the app on a real device. If you are just testing, try to run the app on iOS Simulator, instead on real device.